/Engine/Plugins/Media/MediaCompositing/Source/MediaCompositing/Public/MovieSceneMediaTrack.h
Adds a new media source on the next available/non-overlapping row.
virtual [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) * AddNewMediaSource ( [UMediaSource](API\Runtime\MediaAssets\UMediaSource) & MediaSource, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) Time )